Other
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54.1359k&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 54, May 1990, p. 1359-1368.
Other
4
Fractionation, Geotemperature, Oxygen Atoms, Oxygen Isotopes, Water, Zeolites, Hydrogen Bonds, Morphology, Temperature Dependence, Thermal Stability
Scientific paper
The oxygen isotope fractionation between analcime and water is studied to test the feasibility of using zeolites as low-temperature thermometers. The fractionation of oxygen isotopes between natural analcime and water is determined at 300, 350, and 400 C, and at fluid pressures ranging from 1.5 to 5.0 kbar. Also, isotope ratios for the analcime framework, the channel water, and bulk water are obtained. The results suggest that the channel water is depleted in O-18 relative to bulk water by a constant value of about 5 percent, nearly independent of temperature. The analcime-water fractionation curve is presented, showing that the exchange has little effect on grain morphology and does not involve recrystallization. The exchange is faster than any other observed for a silicate. The exchange rates suggest that zeolites in active high-temperature geothermal areas are in oxygen isotopic equilibrium with ambient fluids. It is concluded that calibrated zeolites may be excellent low-temperature oxygen isotope geothermometers.
Clayton Robert N.
Karlsson Haraldur R.
No associations
LandOfFree
Oxygen isotope fractionation between analcime and water - An experimental study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Oxygen isotope fractionation between analcime and water - An experimental study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen isotope fractionation between analcime and water - An experimental study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-780437